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Finding the Fourth Proportional to 8,755.65, 13,134.29 and 3,489.39

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Solution

The fourth proportional to 8,755.65, 13,134.29 and 3,489.39 is: 5,234.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.65 : 13,134.29 = 3,489.39 : x
  2. Step 2: Convert to fraction form
    8,755.65/13,134.29 = 3,489.39/x
  3. Step 3: Cross multiply
    8,755.65x = 13,134.29 × 3,489.39
  4. Step 4: Simplify right side
    8,755.65x = 45,830,660.18
  5. Step 5: Solve for x
    x = 45,830,660.18/8,755.65
  6. Step 6: Final answer
    x = 5,234.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.